Probably, but best bet would be to reach out directly to Akai Hana. Tons of vegetarian options: veggies, seaweed, meatless noodle dishes, etc... but they do use a eggs, broths, and oils in some of the cooking which might overlap with some of the above.
I know they have meatless options, but I can't speak to whether or not they are vegan as I have never tried to order a vegan option. If you don't get a better answer soon, you may want to try calling the restaurant - my only concern would be if something has an inappropriate fat added for a vegan diet.
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